Hi Antonio, It doesn't work on my board (at91sam9260 + SD 4Go sandisk). I send you some traces. Could you help me please? U-Boot by KLK > mmcinit mmc: clock 150000 too low; setting CLKDIV to 255 mmc: Probing for SDHC ... mmc: SD 2.0 or later card found No MMC card found Thanks in advance, Best Regards, Pierre